IB140012EN
For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2021
Page
41
Operation and Maintenance Manual,
Automatic Transfer Switch Controller, ATC-900
Appendix A: Feature List and Status Display Messages
RED BAR FLASHING MESSAGES
ALL RED BARS ARE GENERAL ALARMS
1
Lockout
Automatic control is disabled but still monitors source status. User must reset
2
Engine Test aborted
While in engine test, if either S1 or S2 is removed, the warning will display
3
Closed Transition Fail (1->2)
In Closed Transition, the switching device failed to operate correctly from S1 to S2
4
Closed Transition Fail (2->1)
In Closed Transition, the switching device failed to operate correctly from S2 to S1
5
In-phase Transition Fail (1->2)
With In-Phase, the switching device failed to operate correctly from S1 to S2
6
In-phase Transition Fail (2->1)
With In-Phase, the switching device failed to operate correctly from S2 to S1
7
Open Transition Fail (1->2)
In Open Transition, the switching device failed to operate correctly from S1 to S2
8
Open Transition Fail (2->1)
In Open Transition, the switching device failed to operate correctly from S2 to S1
9
Generator Unavailable
When directed to transfer and genertor is not available
10
Failed to Sync - Frequency
With In-Phase or Closed Transition, Failed to sync because of Frequency
11
Failed to Sync - Voltage
With In-Phase or Closed Transition, Failed to sync because of Voltage
12
Failed to Sync - Phase Angle
With In-Phase or Closed Transition, Failed to sync because of Phase Angle
13
Source 1 Mech Failed to Open
The Source 1 Mechanism for a breaker or contactor did not open
14
Source 1 Mech Failed to Close
The Source 1 Mechanism for a breaker or contactor did not close
15
Source 2 Mech Failed to Open
The Source 2 Mechanism for a breaker or contactor did not open
16
Source 2 Mech Failed to Close
The Source 2 Mechanism for a breaker or contactor did not close
17
Overran Neutral (S1->N)
The mechanism is connected to Source 2 instead of remaining in Neutral.
18
Overran Neutral (S2->N)
The mechanism is connected to Source 1 instead of remaining in Neutral.
19
Factory Options Error
Internal controller failure. (clear alarms/reboot)
20
Setpoints Error
Internal controller failure. (clear alarms/reboot)
21
Cal factor Error
Internal controller failure. (clear alarms/reboot)
22
State Error
Internal controller failure. (clear alarms/reboot)
23
Timer Error
Internal controller failure. (clear alarms/reboot)
24
Clock Error
Internal controller failure. (clear alarms/reboot)
25
RAM test Error
Internal controller failure. (clear alarms/reboot)
26
ROM test Error
Internal controller failure. (clear alarms/reboot)
27
Watchdog
Internal controller failure. (clear alarms/reboot)
28
Self-test Error
Internal controller failure. (clear alarms/reboot)
29
Gen Start Communications
Internal controller failure. (clear alarms/reboot)
30
Acc I/O Communications
Lost communications to the Accessory I/O Module(s).
31
NTP Communications Error
Lost communications to the NTP module.
32
Clock Sync Error
Invalid date/time received from NTP device or Modbus write.
33
NTP Module Error
Error code received from NTP module.
34
Firmware Upgrade Required
Previous upgrade attempt interrupted (insert USB and restart upgrade).
